best to let it lie..
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 21 January 2003 12:24
To: [EMAIL PROTECTED]
Subject: RE: [ cf-dev ] Collection object (cfc)
Sheesh, they're two completely separate things, Colm. How many books have
you bought that have a workbook attached? Usually, publishers won't put
things like workbooks out because they won't sell enough, so we developers
keep getting the same books with an encyclopaedic scope but that don't dig
into any one subject. It's not the authors fault; the publishers insist
that "big books sell".
If you want to argue that both should be cheaper (although $10 is pretty
danged cheap), that might be a good argument, but not that we wrote a book
-- and then a separate workbook.
Original Message:
-----------------
From: Colm Brazel [EMAIL PROTECTED]
Date: Tue, 21 Jan 2003 10:15:55 -0000
To: [EMAIL PROTECTED]
Subject: RE: [ cf-dev ] Collection object (cfc)
>> How did you deal with persistence?
Hate to plug Helms again since the auld scrooge charges an extra $10 for his
workbook after you pay for his book "Discovering cfc`s", or does that make
me one for compalining about it :) You'll have to consult his book for more
on it, but here is an intro. Persistance is based upon the principle of
inheritance in such object oriented languages such as c++ and java. He has
an example, Employee.cfc that extends another cfc, Person.cfc
Say Person.cfc is
<cfcomponent>
<cfset this.gender = "null">
<cfset this.firstname = "null">
<cfset this.lastname = "null">
<cfset this.dateOFBirth = "null">
<cffunction name="getFirstName">
<cfreturn this.firstname">
</cffunction>
</cfcomponent>
And another cfc, Employee.cfc that extends Person.cfc
<cfcomponent
hint="I am an Employee"
extends="net.cbweb.CFCs.Person">
</cfcomponent>
The really cool thing about cfcs and persistance and inheritance is that
once you have the employee blueprint created above, through inheritance you
get access to all the variables, functions of its parent, Person.cfc you can
set up
a test file in the same cfc's directory as follows,
<cfset missWorld = CreatObject('component','Employee')>
<cfoutput>
My first name is #missWorld.getFirstName()#
</cfoutput>
and cause Employee extends Person through inheritance it has its variables
and methods and supertypes borrowed from Person and can output this as
My first name is null
so Employee has made getFirstName() function as part of its own scope also
the variables available to that scope, its OOPS(object oriented processing
of variables,methods)
rgds
Colm
http://www.cbweb.net
-----Original Message-----
From: Justin MacCarthy [mailto:[EMAIL PROTECTED]]
Sent: 20 January 2003 11:26
To: Cfuk
Subject: [ cf-dev ] Collection object (cfc)
Hi all,
Has anyone written a generic collection component (cfc)? One that
can
contain other cfcs etc.
Share the code? How did you deal with persistence?
Thanks J
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